<template>
  <view class="goods-detial-container">
    <!-- 轮播图区域 -->
    <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
      <swiper-item v-for="(item,i) in goods_info.pics" :key="i">
        <image :src="item.pics_big" mode="widthFix" @click="preview(i)"></image>
      </swiper-item>
    </swiper>
    <!-- 商品详情区域 -->
    <view class="goods-info-box">
      <!-- 商品价格 -->
      <view class="price">￥ {{goods_info.goods_price}}</view>
      <!-- 商品信息主体区域 -->
      <view class="goods-info-body">
        <!-- 商品的名字 -->
        <view class="goods-name">{{goods_info.goods_name}}</view>
        <!-- 收藏 -->
        <view class="favi">
          <uni-icons type="star" size="18" color="gray"></uni-icons>
          <text>收藏</text>
        </view>
      </view>
      <!-- 运费 -->
      <view class="yf"> 快递: 免运费</view>
    </view>
    
    <rich-text :nodes="goods_info.goods_introduce"></rich-text>
    <!-- 商品导航区域 -->
    <view class="goods-nav">
      <!-- fill 控制右侧按钮的样式 -->
        <!-- options 左侧按钮的配置项 -->
        <!-- buttonGroup 右侧按钮的配置项 -->
        <!-- click 左侧按钮的点击事件处理函数 -->
        <!-- buttonClick 右侧按钮的点击事件处理函数 -->
        <uni-goods-nav :fill="true" :options="options" :buttonGroup="buttonGroup" @click="onClick" @buttonClick="buttonClick" />
    </view>
  </view>
</template>

<script>
  import { $http } from '@escook/request-miniprogram';
  //进行导入在vuex通过store进行划分的模块，下面的内容表示，对于导入的内容要做的事
  import {mapState,mapMutations,mapGetters} from 'vuex'
  export default {
    computed: {
      ...mapState('m_cart',[]),
      ...mapGetters('m_cart',['total'])
    },
    // watch:{
      // // 进行监听total值的变化
      // total(newVal){
      //   console.log('total发生变化'+newVal);
      //   // 找到购物车的按钮的配置对象
      //   const findResult = this.options.find(x=>x.text==='购物车')
      //   console.log(findResult)
      //   if(findResult){
      //     findResult.info=newVal
      //   }
      // }
    // },
    //对象的形式
    watch:{
      // 定义total监听器，指向一个配置对象
      total:{ 
        //handler属性用来定义functuon处理函数
        handler(newVal){
        // 进行监听total值的变化
        console.log('total发生变化'+newVal);
        // 找到购物车的按钮的配置对象
        const findResult = this.options.find(x=>x.text==='购物车')
        console.log(findResult)
        if(findResult){
          findResult.info=newVal
        }
      },
      //immediate 属性用来声明次监听器，是否在初次加载完毕后立即进行调用
      immediate: true
    }
},
    data() {
      return {
        goods_info:{},
        // 左侧按钮组的配置对象
            options: [{
              icon: 'shop',
              text: '店铺'
            }, {
              icon: 'cart',
              text: '购物车',
              info: 0
            }],
            // 右侧按钮组的配置对象
            buttonGroup: [{
                text: '加入购物车',
                backgroundColor: '#ff0000',
                color: '#fff'
              },
              {
                text: '立即购买',
                backgroundColor: '#ffa200',
                color: '#fff'
              }
            ]
      };
    },
    methods:{
      ...mapMutations('m_cart',['addToCart']),
      async getGoodsDetail(goods_id){
        const {data:res}= await uni.$http.get('/api/public/v1/goods/detail',{goods_id})
       //请求失败
       if(res.meta.status!=200){
         return uni.$showMsg();
       }
       // 请求成功
       this.goods_info=res.message
      },
      preview(i){
        // 查看原图
        uni.previewImage({
          count:i,
          urls: this.goods_info.pics.map(x=>x.pics_big)
        })
      },
      onClick(e){
        if(e.content.text==='购物车'){
          uni.switchTab({
            url: '/pages/cart/cart'
          })
        }
      },
      buttonClick(e){
        if(e.content.text==="加入购物车"){
          const goods={
            goods_id: this.goods_info.goods_id,
            goods_name: this.goods_info.goods_name,
            goods_price: this.goods_info.goods_price,
            goods_count: 1,
            goods_small_logo: this.goods_info.goods_small_logo,
            goods_state: true
          }
          // 进行调用addToCart
          this.addToCart(goods)
        }
      }
    },
    onLoad(options) {
      this.getGoodsDetail(options.goods_id)
    }
  }
</script>

<style lang="scss">
  swiper{
    height: 750rpx;
    swiper-item{
      image{
        width: 100%;
        height: 100%;
      }
  }
}
.goods-info-box{
  padding: 10px;
  padding-right: 0;
  .price{
    color: #c00;
    font-size: 18px;
    margin: 10px 0
  }
  .goods-info-body{
    display: flex;
    justify-content: space-between;
    .goods-name{
      font-size: 13px;
      margin-right: 10px;
    }
    .favi{
      width: 120px;
      font-size: 12px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      border-left: 1px solid #efefee;
      color: gray
    }
  }
   .yf{
     color: gray;
     font-size: 12px;
     margin: 10px 0;
   }
}
.goods-nav{
  // 进行固定定位
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
}
.goods-detial-container{
  padding-bottom: 50px;
}
</style>
